In a thirty-year career as a teacher of English as a foreign and second language, Nik Peachey set up his own online system for producing weekly lesson plans for teachers, focusing on social issues and addressing areas of language use of special value to language teachers wanting to introduce new topics and activities to their classes at different levels of proficiency. Like many of his colleagues, he has moved beyond the use of the computer and the Internet to produce and circulate lesson plans and now has published an online book on the role of artificial intelligence and its applications, such as ChatGPT, in language learning and teaching. Entitled The Manual of AI-Mediated Autonomous Teacher Development, the book is available online. Nik Peachey takes teachers of English through the theory and practice of artificial intelligence in a clear, simple and non-scientific approach which is adaptable to all teachers of foreign and second languages helping them create and develop new teaching materials to interest and involve their students in the learning process.